Pumping mechanism for gas apparatus.



No. 766,346. PATENTED AUG. 2, 1904. H. HAYNES & R. H. LINDAL.

PUMPING MEGHANISM FOR GAS APPARATUS.

APPLICATION FILED MAY 26, 1903.

NO MODEL.

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PUMPING MECHANISM FOR GAS APPARATUS.

APPLIGATION FILED MAY 26, 1903.

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UNITED STATES Patented August 2, 1901.

PATENT ()EErcE.

HENRY HAYNES AND ROBERT H. LINDAL, OF PIIILADELPHIA, PENN- SYLVANIA.

PUMPING MECHANISM FOR GAS APPARATUS.

SPECIFICATION forming part of Letters Patent No..766,346, dated August 2, 1904.

Application filed May 26, 1903. Serial No. 158,783. (No model.)

Be it known that we, HENRY HAYNES and ROBERT H. LINDAL, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Pumping Mechanism for Gas Apparatus, whereof the following is a specification, reference being had to the accompanying drawings.

Our invention relates to apparatus adapted to carburet atmospheric air and comprising a carbureting-tank containing a mass of liquid hydrocarbon, an air-pump connected to said tank, and a motor operatively related to said pump arranged to continuously supply compressed air to said tank.

In the form of our invention hereinafter described the air-pump comprises duplexalternately reciprocatory air bells provided with automatically-operative air-inletvalves of peculiar construction, and said airbells are connected with said carbureting-tank by conduits having independent controllingvalves, which are automatically operated by the motor in definite relation to the reciprocatory movement of the air-bells, so that the latter alternately deliver compressed air to said tank. Said motor being provided with reciprocatory slide-carriages connected with the respective air-pump bells to alternately lift them and oscillatory levers being connected with said controlling-valves, said bells and valves are automaticallyactuated in definite relation to each other to maintain the supply of compressed air to said tank.

spective air-chambers 15 and 16, and the latter are alternately placed in communication with said tank 1 through said valves 9 and 10 and alternately deliver compressed air to said tank, as hereinafter described.

The pump-casing 12 is provided with an annular chamber 17, containin a liquid seal 18, in which the air-bell 19 is mounted to reciprocate, and the pump-casing 13 is likewise provided with an annularchamber 20, containing a liquid seal 21, in which the air-bell 22 is mounted to reciprocate. Said casing12 is provided with an air-inlet 25, controlled by the cup-valve 26, which comprises the airports 27, and is mounted to reciprocate in the annular chamber 29, containing the liquid seal 30. The casing 13 is likewise provided with the air-inlet 33, controlled by the cup-' valve 3%, which is provided with the air-inlet ports 35 and mounted to reciprocate in the annular chamber 36, containing the liquid seal 37. Said air-bells 19 and 22 are provided with independent flexible connectors 40 and r1, which extend over sheaves L2 and respectively engage the larger peripheries of the drums at and 45, which are mounted to rotate independently on the stationary shaft 46. The ends of said connectors 40 and 41 pendent from said drums are respectively provided with weights 4S and 49, which partially counterbalance the weight of said airbells 19 and 22. The smaller peripheries 50 51 of said drums i4 and 45 are respectively provided with flexible connectors 52 and 53, connecting with the slide carriages 54 and 55, whose sleeves 56 and 57 respectively engage the guide-bearing rods 60 in the motorframe 61. Said carriages 5 k and 55 are mounted to reciprocate beneath the end of the motor-shaft 62, (shown in Fig. IL) and said shaft 62 is provided. with a lever 65, which is arranged to rotate between said carriages 54 and 55, as indicated in Fig. III, and is provided with oppositely-extending rollers 66 and 67, adapted to respectively encounter the inclines 69 and 70, with which said carriages 54 and 55 are respectively provided. Said arrangement is such that said carriages 54 and 55 are alternately shifted from the lefthand side toward the right-hand side ofFigs. II and III as they are successively and alternately encountered by said rollers 66 and 67 during the rotation of said motor-shaft 62, so as to alternately lift saidv bells 19 and 22 by rotating said drums 44 and 45. Said shaft 62 being operatively connected with a weight or spring which may be wound by the shaft 75 tends to continuously rotate in the direction of the arrow marked thereon in Fig. II, but is prevented from rotating while either of the bells 19 or 22 is descending through the upper portion of its operative air-compressing stroke. However, said shaft 62 is released to uplift the inoperative bell to operative position as the operative bell descends to the lower limit of its stroke, such release being effected by an escapement mechanism arranged as follows:

The motor shaft 62 is provided with the cam-disk 76, having notches 77 adapted to alternately engage the detentlever 78, which latter is mounted upon the rock-shaft 79, carrying another lever-arm 80, whose extremity 81 projects within the path of the radial arm 82 on the shaft 84 of the governor-fan 85, which is connected with the train of motorgearing, including said shafts 62 and 75. The arrangement of said parts is such that the rotation of the shaft 62 is prevented by the engagement of the detent-lever arm with the fan-shaft 84 whenever a notch 77 in the cam disk 76 is presented beneath the end of the detent-lever 78, so as to permit the latter to fall therein, and such action occurs at the instant when either of the carriages 54 and 55 is shifted by the rotary lever 65 to the extremity of its stroke toward the right-hand side of Figs. II and III, which of course corresponds with the uplifted position of the pump-bell 19 or 22, connected therewith. In order to release said shaft 62 to uplift the inoperative pump-bell 22 as the carriage 55 of the operative pump-bell 19 passes toward the left-hand side of Fig. II, the trippinglever 87 is loosely mounted upon the shaft 62 and provided with the arm 89 to strike the detent-lever 78. The arm 90 of said lever 87 is engaged by the flange 91 of the trippingframe 92, which overhangs the cam 88, carried by said shaft 62. Said frame 92 is pivoted at 93 upon the motor-frame 61, as shown at the right-hand side of Fig. II, and is provided with opposed idle rollers 94 and 95,

which, as shown in Fig. II, are respectively 6 5 arranged to engage the horizontal tracks 96 and 97 of the respective slide-carriages 54 and 55,. so as to be alternately supported thereby.

In the position of the apparatus shown the carriage 55 is traversing the guide-rods 60 toward the left-hand side of Fig. II, while the airbell 19 is descending. When the continued traverse of said carriage 55 withdraws the track 97 from beneath the rollers of the tripping-frame 92, the latter will fall to the position indicated in dotted lines in Fig. II, and thereby oscillate the tripping-lever 87, raise the arm 78 of the detent-lever out of the notch 77, thus disengage the arm 80 from the radial lever 82 of the fan-shaft 84 and permit the motor to resume its rotation of the shaft 62 in the direction of the arrow marked on Fig. II. During such rotation the cam 88 uplifts the frame 92 to the normal position shown in Fig. II, and the roller 66, engaging the cam 69 of the carriage 54, shifts the latter to the right-hand side of Fig. II, and thus uplifts the inoperative airbell 22 to the operative position, (indicated in dotted lines in Fig. 1,) in which position the other notch 77 in the cam-disk 76 being presented beneath the detent-lever 78 permits the latter to fall therein, and thus prevent the further rotation of the motor-shaft 62 until the traverse of the carriage 54 toward the left-hand side of Fig. II corresponding with the descent of the then operative air-bell 22 withdraws the track 96 from beneath the rollers 94 of the trippingframe 92 and permits the latter to again fall and release the detent-lever 78, as above described, whereupon the air-bell 19 is again raised to the upper limit of its stroke and the above-described operation is repeated.

Uplifting the air-bells 19 and 22, as just described, suffices to automatically charge their respective air-chambers 15 and 16 with air from the outer atmosphere, for the reason that as soon as the upward movement of its bell establishes a partial vacuum within one of said chambers the cup-valve controlling its inlet 25 or 33 is uplifted by the atmospheric pressure until the air-ports in said valve are above the liquid seal, and thus permit air to enter the chamber until the pressure within and without said chamber is equalized. Thereupon said valve gravitates to its normal position. (Shown in Fig. I.)

In order to operate the controlling-valves 9 and 10 in proper relation to the reciprocatory movement of said bells 19 and 22, so as to place the respective branch outlet-pipes 7 and 8 of the chambers 15 and 16 alternately in communication with the carbureting-tank 1, the lever-head 98 is mounted upon the end of the motorshaft 62 opposite to that which carries the lever 65. Said head 98, as shown in Fig. I, is provided with rollers 99 and 100, projecting from its opposite sides. The roller 99 is adapted to alternately engage the os'cillatory levers 102 103, which, being mounted upon the studs 10% and 105, projecting from the motor-frame 61, have their free extremities yoked by the bar 107 and connected by the link 108 with the valve 9. is adapted to alternately engage the cam-levers 110 111, which are mounted to oscillate upon the studs 104 105 independently of the cam-levers 102 and 103 and have their free extremities yoked by the bar 112 and connected by the link 11% with the valve 10.

In order to prevent the accidental operation of said valves 9 and 10 by the weight of the links 108 and 11 1, the latter are counterbalanced by respective springs 116 and 117, which connect said links with a suitable stationary support 118, as indicated in Fig. I.

It is to be understood that the pump-chambers 15 and 16 may be made much larger in proportion to the motor than in the form which we have illustrated, which is merely a typical embodiment of our invention. Moreover, we do not desire to limit ourselves to the particular construction and arrangement which we have shown, as it is obvious that various modifications may be made therein without departing from the essential features of our invention.

\Ve claim 1. In gas apparatus, the combination with two stationary pump-casings respectively inclosing air-chambers provided with liq uid seals and outlets; of pump-bells mounted to reciprocate in the respective casings in engagement with said seals; air-inlets to said casings provided with liquid seals; cup-valves mounted to reciprocate in said inlet-seals and provided with ports normally covered thereby; conduits leading from said pump-outlets; controllingvalves for said conduits; rotary drums independently connected with the respective pump bells; reciprocatory carriages independently connected with the respective drums; a motor-shaft; means carried by said motor-shaft, arranged to alternately reciprocate said carriages; means carried by said motor-shaft arranged to alternately operate said controlling valves; detent mechanism normally preventing the rotation of said motorshaft; and, tripping mechanism arranged to release said motor-shaft whenever either of' said bells reaches a predetermined position, substantially as set forth.

2. In gas apparatus, the combination with two stationary pump-casings respectively inclosing air-chambers provided with liquid seals and outlets; of pump-bells mounted to reciprocate in the respective casings in engagement with said seals; air-inlets to said casings provided with liquid seals; cup-valves mounted to reciprocate in said inlet-seals and provided with ports normally covered thereby; conduits leading from said pump-outlets; control- The roller 100 ling-valves for said conduits; rotary 'drums 5 independently connected with the respective pump-bells; reciprocatory carriages independently connected with the respective drums; a

motor-shaft; means carried by said motorshaft arranged to alternately reciprocate said 7 carriages; and, means carried by said motorshaftyarranged to alternately operate said controlling-valves, substantially as set forth.

3. In gas apparatus, the combination with stationary pump-casings inclosing respective air-chambers provided with outlets; of pumpbells mounted to reciprocate in the respective casings independently of each other; rotary drums respectively connected with said bells;

reciprocatory carriages respectively connectand, tripping mechanism arranged to release 5 said motor-shaft when either of said bells reaches a predetermined position, substantially as set forth.

4. In gas apparatus, the combination with pump-casings inclosing respective air-cham- 9 bers provided with outlets; of pump-bells mounted to. reciprocate in said casings; independently rotary drums respectively connected with said bells; reciprocatory carriages respectively connected with said drums; a motor; and, valves operated by said motor, arranged to connect said bells with a common outlet in alternation, substantially as set forth.

5. In gas apparatus, the combination with a reciprocatory pump-bell; of a rotary shaft arranged to reciprocate said bell; detent mech anism normally preventingthe rotation ofsaid shaft; and, tripping mechanism arranged to release said shaft when said bell reaches a predetermined position, comprising a cam on said 5 shaft, a detent-lever arranged to engage said cam, and an oscillatory tripping-frame arranged to releasesa'id detent, substantially as set forth.

6. In gas apparatus, the combination with 1 10 a reciprocatory pump-bell; of a reciprocatory carriage operativel y related to said pump-bell; a rotary shaft arranged to reciprocate said carriage; detent mechanism normally preventing the rotation of said shaft; and, trip- 5 plng mechanism arranged to release sald shaft when said bell reaches a predetermined position, substantially as set forth.

7. 1n gas apparatus, the combination \vlth a reciprocatory pump-bell; of a rotary shaft 120 arranged to reciprocate said bell; detent mechanism normally preventing the rotation of said shaft; and, tripping mechanism arranged to release said shaft when said bell reaches a predetermined position,substantially as set forth. I 5

8. In gas apparatus, the combination with pump-chambers; of conduitsleadingfrom the respective chambers; valves controlling said conduits; a motor; links respectively connecting said valves with said motor, arranged to operate them in definite relation; and, springs arranged to counterbalance the weight of said links, substantially as set forth.

9. In gas apparatus, the combination with a pump-chamber; of a conduit leading from said chamber; a valve controlling said conduit; a motor; a link connecting said valve with said motor; and, means arranged to counterbalance the weight of said link, substantially as set forth.

10. In gas apparatus, the combination with a pump-chamber; of an inlet for said chamber; a valve controlling said inlet, comprising a perforated cup; and, a liquid seal arranged to close the perforations in said cup under pressure and permit the opening of said perforations when said pressure is relieved, substantially as set forth.

11. In gas apparatus, the combination with a reciprocatory pump-bell; of a rotary drum operatively connected with said bell; a reciprocatory carriage operatively connected to said drum; and, a rotary shaft arranged to reciprocate said carriage, substantially as set forth.

12. In gas apparatus, the combination with a reciprocatory pump-bell; of a reciprocatory carriage operatively related to said pump-bell; and, a rotary shaft arranged to reciprocate said carriage, substantially as set forth.

In testimony whereof We have hereunto signed our names, at Philadelphia, in the State of Pennsylvania, this 25th day of May, 1903.

HENRY HAYNES. ROBERT H. LINDAL. Witnesses:

ROBERT CULLER, JAMES HOUGHTON. 

